If you administer a network, then log reports are vital to understanding what went wrong or potential problems with a system. Sawmill takes log reports and produces in depth stats on the essential information you need to keep things running smoothly.
It should be noted from the start that Sawmill is a highly complex application for beginners to understand and it's mainly aimed at network administrators. However, it does come with detailed documentation and the rewards may well be worth the effort if it helps you manage and read multiple logs more easily.
Sawmill works across platforms and is best utilized with web server logs although it can handle just about anything thrown at it as long as its a TXT (text) file. Reports are hierarchical and well presented featuring cross-links for navigation. It includes live reports & graphs, advanced user tracking courtesy of WebNibbler and is highly configurable.
Sawmill isn't the most simple application to get to grips with but it can certainly add a lot of power and value to analysis of log files.
-  Viewing reports of a v8 profile converted to new format, gives, "Can't find tableAlias=, fieldName= in table xref0."  Visitors, and other "unique" fields, show zeros in some reports.  The Overview shows 0 for visitors, or other unique fields, for some (larger?) datasets.  Attempting to attach the "Particular File Access" snapon immediately gives an error, "Unknown variable 'lang_admin.snapons.particular_file_access.parameters.page_field.label' in expression".